PI90LVB179/PI90LVB180/
PI90LVB050/PI90LVB051
3.3V Boost LVDS High-Speed Differential Line Drivers & Receivers
Receiver Electrical Characteristics (Over recommended operating conditions unless otherwise noted).
Parameter
VITH+
Test Conditions
Min.
Typ.
Max. Units
Positive-going differential input voltage threshold
Negative-going differential input voltage threshold
50
See Figures 5 & Table 1
mV
VITH–
–50
VOH
VOL
High-level output voltage
Low-level output voltage
IOH = –8mA
IOL = 8mA
VI = 0
2.4
V
0.4
V
–2
–11
–3
–20
II
Input current (RIN+ or RIN–)
VI = 2.4V
VCC = 0
–1.2
II (OFF)
IH
Power-off input current (RIN+ or RIN–
High-level input current (enables)
Low-level input current (enables)
High-impedance output current
Input capacitance
)
±20
±10
±10
±10
µA
pF
VIH = 2V
VIL = 0.8V
VO = 0 or 5V
IL
IOZ
CI
5
†All typical values are at 25°C with a 3.3V supply
Driver Switching Characteristics (Over recommended operating conditions unless otherwise noted).
Parameter
Test Conditions
Min. Typ.† Max. Units
tPLH
tPHL
Propagation delay time, low-to-high-level output
Propagation delay time, lhigh-to-low-level output
2.0
1.9
2.6
2.5
ns
ps
tr
Differential output signal rise time
Differential output signal fall time
0.4
0.4
200
90
0.6
0.6
310
160
0.9
5
RL = 50 ohms
CL = 10pF
See Figure 2
tf
tsk(p)
tsk(o)
tsk(pp) Part-part-part skew**
Pulse skew (tPHL – tPLH
)
Channel-to-channel output skew‡
tPZH
tPZL
tPHZ
tPLZ
Propagation delay time, high-impedance-to-high-level output
3.3
2.0
1.7
1.7
ns
Propagation delay time, high-impedance-to-low-level output
Propagation delay time, high-level-to-high-impedance output
Propagation delay time, low-level-to-high-impedance output
3.3
3.3
3.3
See Figure 7
†All typical values are at 25°C with a 3.3V supply
‡tsk(o): the maximum delay time difference between drivers on the same device.
**tsk(pp): magnitude of difference in propagation delay times between any specific terminals of two devices (all things being equal)
PS8540
05/01/01
4
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
